Patents by Inventor Connie R. Qian

Connie R. Qian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Halogenated elastomeric compositions having improved stability and green strength
    Patent number: 6956075
    Abstract: The present invention is a composition and a method of forming a composition, the composition comprising at least a halogenated elastomer and an amine or phosphine. An additional rubber component may be present in the composition of the invention. In one embodiment, the halogenated elastomer is a isoolefin copolymer comprising a halomethylstyrene derived unit. The amine or phosphine compound is represented by the formula (R1R2R3)Q, wherein Q is a Group 15 element, and wherein R1 is either hydrogen or a C4 to C30 hydrocarbyl group, R2 is either hydrogen or a C1 to C30 hydrocarbyl group; and R3 is either hydrogen or a C1 to C30 hydrocarbyl group provided that at least one of R1, R2 and R3 is not hydrogen.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: October 18, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Hsien-Chang Wang, Ilan Duvdevani, Connie R. Qian, Pawan K. Agarwal
  • Halogenated elastomeric compositions having improved stability and green strength
    Publication number: 20040097654
    Abstract: The present invention is a composition and a method of forming a composition, the composition comprising at least a halogenated elastomer and an amine or phosphine. An additional rubber component may be present in the composition of the invention. In one embodiment, the halogenated elastomer is a isoolefin copolymer comprising a halomethylstyrene derived unit. The amine or phosphine compound is represented by the formula (R1R2R3)Q, wherein Q is a Group 15 element, and wherein R1 is either hydrogen or a C4 to C30 hydrocarbyl group, R2 is either hydrogen or a C1 to C30 hydrocarbyl group; and R3 is either hydrogen or a C1 to C30 hydrocarbyl group provided that at least one of R1, R2 and R3 is not hydrogen.
    Type: Application
    Filed: April 3, 2003
    Publication date: May 20, 2004
    Inventors: Hsien-Chang Wang, Ilan Duvdevani, Connie R Qian, Pawan K. Agarwal
  • Rubber blends having improved stability and green strength
    Patent number: 6552108
    Abstract: The present invention relates generally to rubber compositions having improved green strength and thermal stability. These compositions comprise blends of a first rubber component, an isoolefin/para-alkylstyrene copolymer component, and an amine component reacted in situ prior to curing. The present invention further relates to methods for preparing these compositions.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: April 22, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Hsien Chang Wang, Ilan Duvdevani, Connie R. Qian, Pawan Kumar Agarwal
  • Isobutylene based elastomer blends having improved strength elasticity, and reduced permeability
    Patent number: 6326433
    Abstract: The improved green strength, green elongation, and green relaxation properties of isobutylene based elastomers at elevated temperatures along with improved aging and barrier properties are achieved by blending semi-compatible, semi-crystalline polymers with the isobutylene elastomers. The improved properties are maintained in subsequent rubber compounds containing said blends and are particularly useful in tire and pharmaceutical container applications.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: December 4, 2001
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Hsien-Chang Wang, Ilan Duvdevani, Sudhin Datta, Connie R. Qian